Kev ziab khaub ncaws nyob rau hauv lub hnub yog xav kom noj qab nyob zoo, thiab nws yog ib qho yooj yim thiab muaj zog npaum. Cov khaub ncaws uas ziab hauv lub hnub tsis hnov tsw tshiab, tab sis muaj qee cov khaub ncaws uas tsis haum rau ziab. Cov phuam da dej yog ib qho piv txwv.
Vim li cas ib daim phuam qhuav rau ntawm txoj kab nyuaj thiab ntxhib li nqaij nyug jerky? Nws yog ib lo lus nug uas ua rau muaj kev ntxhov siab rau cov kws tshawb fawb tau ntev, tab sis ib pab neeg tshawb fawb los ntawm Hokkaido University hauv Nyij Pooj tau daws qhov tsis paub. Lawv thov kom tau tawg qhov "tus yuam sij rau huab cua kom qhuav" thiab hauv cov txheej txheem tau kawm qee yam tseem ceeb ntawm dej.
Hais txog qhov no, feem ntau cov ntaub uas tsis yog ua los ntawm cov yas (tshwj tsis yog txhob lo lo ntxhuav thiab ntaub plaub) yog ua los ntawm cov khoom siv cog. Paj Rwb yog ib qho fluffy dawb fiber ntau los ntawm cov noob ntawm tsob ntoo me me, thaum rayon, Modal, fibrin, acetate, thiab xyoob yog tag nrho los ntawm cov ntoo fibers. Cov nroj tsuag fiber ntau yog cov organic compound uas pab tswj kev ruaj khov ntawm cov phab ntsa ntawm cov nroj tsuag, thiab fiber ntau yog absorbent heev, uas yog vim li cas peb siv paj rwb los ua cov phuam so kom zoo dua polyester. Cov dej molecules txuas rau cellulose thiab lo nrog nws los ntawm cov txheej txheem hu ua capillarity, uas tuaj yeem tiv thaiv lub ntiajteb txawj nqus thiab rub dej rau saum npoo.
Vim hais tias dej yog ib tug polar molecule, txhais tau hais tias nws muaj ib tug zoo nqi ntawm ib sab thiab ib tug tsis zoo nqi ntawm lwm yam, dej yog yooj yim attracted nqi. Pab neeg no hais tias cov qauv ntawm tus neeg hla cov fibers hauv cov huab cua qhuav zoo li cov ntaub so ntswg zoo li "khi dej", los yog dej coj tus cwj pwm txawv vim nws muaj peev xwm txuas rau ib yam dab tsi ntawm nws qhov chaw uas ua zoo li cov qhaub cij, coj cov fibers los ze zog ua ke. Cov kev tshawb fawb tshiab tshaj plaws tshwm sim nyob rau hauv qhov teeb meem tsis ntev los no ntawm Phau Tsom Faj ntawm Physical Chemistry.
Pab neeg no tau ua cov kev sim qhia tias kev khi dej rau saum npoo ntawm cov paj rwb fibers tsim ib hom "capillary adhesion" ntawm cov me me fibers. Thaum cov hlua no lo ua ke, lawv ua rau cov ntaub nyuaj. Hokkaido University tus kws tshawb fawb Ken-Ichiro Murata tau sau tseg tias cov dej sib koom ua ke nws tus kheej muaj qhov tshwj xeeb hydrogen bonding xeev, tsis zoo li dej zoo tib yam.
Tus kws tshawb fawb Takako Igarashi tau hais tias: "cov neeg xav tias, tuaj yeem txo qhov kev sib txhuam ntawm cov paj rwb fiber ntau cov ntaub softener, txawm li cas los xij, peb cov txiaj ntsig kev tshawb fawb pom tau tias yuav txhawb nqa cov paj rwb fiber ntau paj rwb phuam ntawm hydration hardening, nws muaj qhov kev xav tshiab rau kev nkag siab ntawm lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm cov ntaub softener, pab peb txhim kho kev npaj zoo dua, qauv thiab ntaub qauv. "
Post lub sij hawm: Jun-24-2022